The entire 16th season of the long-running cult classic. Tom Baker, the popular fourth Doctor, is joined by the beautiful Romana (Mary Tamm) in this 26-episode intergalactic treasure hunt for the all-powerful Key to Time. Includes six storylines: 'The Ribos Operation', 'The Pirate Planet', 'The Stones of Blood', 'The Androids of Tara', 'The Power of Kroll' and 'The Armageddon Factor'.